[jfsolo]

This is from Mattanite's Franchise tips thread:

Scrambler – BSK, RUN, SAC – Faster QBs with lower throwing attributes other than SAC. This archetype often gets a Speed boost.

Strong Arm – THP, DAC, MAC – Higher throw power but can vary in accuracy. This Archetype often gets a THP boost.

Improviser– RUN, TUP, DAC – Usually average throwers with some physical attributes and good at throwing on the run or under pressure.

Field General – MAC, SAC, DAC – Usually good accurate throwers and if you progress this archetype you'll get a decent spread of throw accuracy.

It's difficult because those two Archetypes are usually so close together in ratings, but a few adjustments can usually get the Improviser ahead by one point which is all you need. Adjust break sack and SAC down a little and boost DAC and RUN up a little to start with and then keep making little minor tweaks to get the ratings to flip.