Look at it using this scenario, made by my imagination at 12:56 at night:
You work for a spy organization and you have to evaluate two different agents who both have to act like two kinds of American: a Redneck and a Lawyer.
Agent 1, who’s been in service for years seems to do both pretty well, but then you see Agent 2, a newcomer to the group, does the redneck better then Agent 1.
Then you see that one of them needs to be deployed to Texas.
Who would you send?
It’s the same thing here: Kevin has been doing this for a long time and when push comes to shove, he is the better Batman.
But Baker is the better Bruce because of the fact that he has a better connection to Bruce Wayne’s character, while Conroy is more connected to Batman, which he said himself in Finding Batman.
Either way, there was always going to come a time that someone better at either Batman or Bruce Wayne was going to come along.
After all, most people though Jack Nicholson was the best Joker, but then Mark Hamill stole the show, and then after him, Heath Ledger became the next great Joker.
I actually do some acting myself at times and I can confirm: it’s not the actor’s experience that makes them great for a role, it’s their connection to the character. It’s why I have to say that while Kevin will always be one of, if not THE best, Batmen, Troy Baker is a better Bruce Wayne.
But, that’s also why we have opinions. I believe Baker is the better Bruce through what I know and the conclusions I’ve made from various facts, but you don’t have to agree, just like I don’t have to agree with @moro that Reeve is the best Superman (I mean, I do. It’s just an example. I mean, I watched Superman 1 when I was 6 so what did you expect?).