1) Not really, but having more conservative cams is a good thing.

2) On a stock engine, no. The VTEC crossover is already optimized for the stock specs.

3) That situation is unreasonable. That would involve an incredible amount of work to bring the two engines to be exactly the same... and then the ZC would probably win by about 1/4" because of the slight weight advantage. In real life, a B16A would be faster mod-for-mod.

4) you can find "hella" more mods for the B-series.

EDIT: dammit, 4GH beat me to it.