George-
The two bikes were indeed different. The Pro did change some so a direct comparison is time dependent. The International had a longer wheelbase, some from slacker angles and rake, some from longer chainstays. Bigger clearances, easy to mount fenders on an International. Every once in a while we sold an International with dealer installed Campagnolo side pulls, which also required a rear drop bolt, even with that they came in cheaper than a Pro, but rarely considered as a cross shopped bike.
John Jorgensen
Torrance Ca USA