I don't really understand why getting less str is a problem.

Paladin at i90 (95 weapon/shield) gets 158 str from gear in full fending. Monk in striking gets 224, about 141% what the pally gets.

Paladin at i130 (135 weapon/shield) gets 272 str from gear in full fending. Monk in striking gets 388, about 142% what the pally gets.

That's a very small relative increase, and I stress RELATIVE increase, because the absolute values don't mean anything. Every attack in this game is a function of potency - there are no attacks that deal, say, 50 damage plus a scaling value, which is where tanks run into trouble in other mmos, because the flat value tends to be very large, and their scaling is poor.. Your potency per second doesn't change much with gear - it goes up very slowly with skill/spell speed, with an occasional jump if you hit a breakpoint, but gains in strength don't affect it at all. Str is, essentially, just a multiplier on your attack damage, and if you held hate with 70% of the multiplier the dps got back in coil one, you can hold hate with 70% of the multiplier the dps get now.