yes

in general, mostly that all sizes have the same size seat mast (which is a bit crazy since a 61 will probably need more than 73cm of seat mast), head tubes are more or less the same size across the range (the 52 posted above has a head tube that's about 8mm shorter than our friend's 61) mostly the headtube is just wayy too short. kvangundy is pretty flexible, but he's running his with about a cm of spacers and a +6deg stem and he has his back horizontal in the drops. it's hard to imagine that someone 6" taller on a 61 needs the same size head tube.

it's a fun bike, but it definitely benefits the smaller people i think. i probably wouldn't buy past a 56 atmo