The answer is simple. The second frame has a 17mm taller head tube, so it's vertically larger, IF the type of headset used is the same on both frames. If not, then you need to specify if one uses a conventional press-fit headset and the other an integrated model. It make a significant difference. Because you list the out-dated seat tube dimension, I assume that both are traditional horizontal TT frames.

Horizontally, the 74 degree STA adds about 5mm to the reach of the first frame, so it's only about 2mm shorter in reach.