4/5 is not an elite shot. 4/6, 5/5, 5/4 and 6/3 are elite shots. JR is a better C checker and his 5 SHP is much more precious than the 6-5 agi drop vs elite GC players.
As for TK, well he got that 99 locked speed.
Mogs is just better than Yzerman and at 6 agi the 1 extra weight doesnt mean much.