http://slowtwitch.com/cgi-bin/parse....%20and%20reach

This is the old stack and reach database at slow twitch but it gives you a general idea.

Here are my thoughts...

Compare bikes when they are optimized, Gerard of Cervelo admits a P3C can be ridden slack but is optimized to the 78 degree position.

Don't assume all bikes of a manufacturer will fit the same.

Don't assume listed sizes match up to each other.

Cervelo, Quintana Roo and Felt are in general all steeper, lower bikes.

Trek and Scott seem to be slack bikes that are low, so with either a forward position they would be steep/low or with a higher front end they'd be more relaxed. Kestrel's airfoil pro is the same way, Dan Empfiel lists it as high, but I would argue its a bike thats meant to have the saddle pushed forward.

Specialized is a more relaxed tri bike.

Quite honestly, a lot of companies geometries are all over the place like Cannondale.