Well, let's look at some numbers...
War Eagle 2.50 0.047 0.019 S70 neaT
The Look 2.55 0.050 0.017 S75 neaT
Same OOB finish, Look cover is stronger (S75 is stronger than it seems), higher RG, higher diff. Drilled the same (Which mine are, just haven't thrown them yet.), the Look should be much harder off the spot due to the higher RG core saving energy, and the cover.
Also, they're going to hook at different spots on the lane. I just punched up a bunch of Global stuff all in one day (Hook Green/Black, Hook Pink/Black, Look, War and Black Eagle, Train and Freight Train) and everything that I drilled (Except for the Black Eagle and the dull Hook), is 70x5x30. I believe that the covers offer enough difference to allow for that.