Sorry I have no stats to post but I've rammed enough with pips 402, 240 and 042 to tell you your shield ring loss is lower with 4 to shields.
Wing with someone and experiment and see for yourself.
Not sure what you're arguing with bud. CK stated that resistances don't alter damage but pips do, I affirmed that, and you're telling me I'm wrong because pips do alter damage.
Eh?
Is ramming frowned upon by the competitive PvP crowd?
I'm not exactly competitive, but I can assure you that ramming isn't frowned upon. It's often difficult because ramming a decent FA Off pilot isn't as easy as nailing some NPC 'conda in the face with your cutter, but it's still often viable.
And to be fair, "frowned upon" is a loose thing for PvP. Provided you don't actually cheat, many will have the attitude that going into a fight handicapping yourself is lunacy - if one has to fight dirty to win, then with muchos dirt will one fight.