Matt & Glenn
A quick look at GW's list of Top 100 Classic reveals that PA has 11 courses - 6Oakmont,7Merion,52Aronimink,69HVCC,71Lancaster,74Fox Chapel,76PhillyCC,77Lehigh,93Manufacturers,97Sunnehanna&100 Rolling Green
while OH has 8 courses-
26Camargo,37Inverness,53Scioto,64NCR South,65Brookside,88Moraine,96Canterbury&99Firestone
OH has 3 courses in Top 100 Modern-
6 Muirfield Village, 7 TGC & 30Double Eagle
while PA has 0 in Top 100 Modern
Given the strength of PA with Oakmont rated at 9.04 & Merion at 8.94 while MV is the highest rated OH course at 8.19 and TGC comes in at 8.17, I'd side with Matt on this one*
Disclaimer. I'm a native Keysone Stater and PSU alum