One consideration from Saturday and the numbers I posted - it was windy (mostly cross, some head, some tail). I don't understand the science but I suspect a bigger guy has some advantage in those conditions. Also had a disc wheel cover. In other tetsing I've required around 300W to go 25mph (same bike/position but no clown hat or disc). So it seems like conditions yesterday assisted me somehow.
Position-wise I'd guess I look similar to WR. Probably slightly flatter back, arms maybe a fraction lower, and forearms flat.
EDIT - I do have problems with knees hitting elbows (long legs, shorter torso). So I am slightly "supermaned" and saddle is slightly farther back than I'd like.