Hmm. How so?

The Michelin, at a glance, looks like it's got a good amount of bite along the tread, but supplies a somewhat smooth raised surface; the Kenda doesn't seem to supply as much bite, but supplies a smoother surface because it's actually continuous.

These Sunlite tires also don't look much like they have a lot of bite, though they might roll more smoothly than the Michelin tires because the surface looks more continuous.

But I've got more experience with automobile tires; I'm not sure on bicycle tires. I mean it's easily possible that compression of the surface on those Michelin tires would cause the tread features to come to constant odds with the road surface, creating a bumpier ride and more rolling resistance; this is not a problem on automobile tires because you have to get into really hard core offroading tread before it actually makes a difference.

So I have no idea how to evaluate things. I wonder if there's a guide somewhere...

Maybe my problem is I'm trying to get a road bike to do mountain biking.

Hmm, these look interesting. Lots of channeling and features for removing water... good rain road tires?