Interesting…I’m an old roadie, and my 26 mountain bike (a GT that’s pretty long in the tooth now) has a pretty similar feel to 700c road wheels once you account for the different tire profile. My son has a 29er; when I’ve ridden it my sense has been that it is more stable but less nimble. It seems to have a stronger desire to go straight. Of course, that could also be in the steering geometry of his particular bike…it’s not like all my road bikes handle alike!