Originally Posted by
IANative
Campag, I already have the SL2 Roubaix Rival, and I love it.
Problem solved.
It's a great bike. Seriously, unless you absolutely need a rider position that's a few mm lower, it's not going to matter.
Originally Posted by IANative
my limited knowledge thus far tells me that the shorter wheelbase would (should?) = quicker power transfer and faster acceleration....
Power transfer and acceleration will be exactly the same. The only difference is that the road bike will be a little more responsive, and absorb less road shock.
Originally Posted by IANative
the advantage gained from both factors may be minimal.
Now yer talkin'.
You aren't going to get any more fit because you're riding a Tarmac instead of a Roubaix. If you want to get faster, then do some serious training. Then train some more. Then keep training.

Seriously,
you are the engine.
Ignore the hype, ignore the marketing, and just ride your bike.