In the Tele, flat pole pieces were used until about mid '54, then Fender went to thinner polepieces that were raised and staggered and the tone changed to the bright twang we associate with country Tele players. The polepieces in all of the 50's and 60's Strats are raised and staggered...never flat.
According to Duchossoir, the 50's and early 60's Fender Strat pickups were wound with 8350 turns compared to 9200 for the Tele, and then later as little as 7800 turns. Then to 7600 turns in the late 60's and early 70's...Fender's worst and weakest Strat pickups IMO.
Seymour has found that the 50's Strat pickups were wound with fewer turns than the early 60's version. I believe this is true because the pickups in my '63 Strat sure seem a little hotter than the pickups that were in my '54 and '57 Strats.