Stock, the Chevy wins. The FE has terrible exhaust manifolds. Other than that, they are mostly the same, with the 350 obviously getting modern upgrades towards the end of it's life which would put it ahead of the 352.

If you found the last 352 in '67 and pitted it against the first 350 in '67, it would probably favor the 350. If you pitted the weakest versions ever offered, the 352 probably wins as it did not suffer the 1970s horrors. If you pitted the hottest stockers ever offered, the Chevy wins.

If you reenacated WWII using all available 352s vs. all available 350s, the Chevy wins......

If you go wildest aftermarket build, the 352 probably wins as you can overbore it to 4.050 and stroke it out to a 438, just a little larger than the 427 a 350 will go to.