Well, I certainly feel that QoS veered too far in the Bourne direction. But I feel that way because, in most ways, the Bond approach is better than the Bourne approach. I know that goes against a lot of the critical consensus (although I should note that the pendulum has begun to swing back the other way recently).
Don't get me wrong--I love the Bourne movies, I've seen them all multiple times, I own them all on DVD. So when I make this comparison, please understand that I'm NOT ripping on these movies.
But if you give me a choice between watching a Bond movie and a Bourne, 85% of the time I'm choosing a Bond. Here's a few reasons why:
A) The Bourne movies all have the exact same plot. Now, I've never read the books, so I don't know how closely the movies have followed Ludlum. But all three of the films follow the same damn outline:
"While Bourne tries to discover his identity, a high level CIA muckity muck decides he's inconvenient and tries to kill Bourne to cover up his own malfeasance. Bourne gets away and the bad CIA guy is stopped by a good CIA guy. Throw in a confrontation with another Treadstone agent."That's it. We change the scenery, have a chase in a different make of car, but it's all basically the same stuff: Bourne running around avoiding being caught/killed while riveting CIA office politics really resolve the crisis. It's not a bad outline, but they've already re-used it twice.
Bond movies, on the other hand, have far more variety...yeah, you can come up with plenty of similarities (after all, there have been 22 movies). But Dr. No is nothing like From Russia With Love is nothing like Goldfinger etc. Even at the height of the rigid "Bond formula," at least the movies had different plots, different threats.
B) The Bourne movies are grim, humorless affairs. Especially after they killed off Marie in the first few minutes of B2. People complain how grim Licence to Kill was, or how humorless QoS was. But those movies look like Seinfeld next to the Bournes. There are more wry jokes in ten minutes of QoS than the whole of B2 and B3.
Sure, the Bond movies have often been too jokey, too humor oriented in the past. But the film makers realized that you need some humor to leaven the tension. You get none of that in B2 and B3...you might chuckle to yourself at how Bourne outsmarted someone (said chuckle cued by the "Bourne fooled someone music sting," because they feel the audience is too dumb to realize when he's done something clever, apparently). But there's no laughter, no levity...which makes the grimness of the Bournes hard to bear for two hours.
C) Bourne needs a companion. Killing Marie was a big mistake...or at least not not replacing her with another buddy.
There's a reason there's always a Bond girl, always a Doctor Who companion. We need to make our hero accessible, to give the audience an identification figure; hell, we just need to give our hero someone to talk to!! For far too much of B2 & B3, our hero is silent, broodier than Frodo but with nobody to vent to--is there any lead character who has less dialogue than Jason Bourne?!? It's hard to give us any character development when he has no one to interact with. An occasional terse phone chat with Pam Landy isn't enough.
He doesn't need to have a "Bourne Girl" every movie, but he does need someone, anyone, to interact with on a regular basis. Matt Damon is a fine actor, but there's a reason Daniel Craig's Bond has blown him away--Bond doesn't lapse into isolation, becoming a cool but remote automaton. That's why B1 was, to me, distinctly better than B2 or B3--Jason's relationship with Marie helped humanize the character, and gave Damon someone to play off of.
D) How about some villains? Yes, this is really just a subset of A) above, but it bears repeating. OK, so every single person of authority at the CIA is a corrupt bastard (except, of course, for Pam Landy)--we get it. The U.S. intelligence service suck. Can we move on now?
Bond's gone rogue more than once, but always in pursuit of an actual enemy, not to try to bring down M. And those instances don't happen in consecutive movies, anyway.
Yes, I understand Bourne wants to be "realistic," so we're not going to get megalomaniacal billionaires. But there are plenty of "realistic" villains out there--terrorists and drug lords and threats to U.S. security. Yet aside from the African leader Jason refuses to kill in B1 (and they never show us why he's "bad"), there's not a single bad guy in the movies except American operatives.
Hey, I'll concede that the USA sucks, is arrogant, treats its operatives like shit, yadda yadda (at least for the sake of argument). But seriously, does that mean the only villains we can show are American government officials? That's just boring, and shows a profound lack of imagination.
Not to mention, Bourne never gets to actually meet the big bads, so there goes the tension, character building, and cathartic confrontation the Bond films give us.
But hey, we get lots and lots of CIA office politics--isn't that what we all watch a spy movie for?
So when everybody makes their "Bond is becoming more like Bourne" comparisons, they're only looking at superficial elements, like editing styles. But Bond is a better character, in movies that work better dramatically...and aren't as repetitive as hell. When it comes to the more important elements of film, so far Bourne takes a back seat to 007.