Old debate. Does push-pin give equal pleasure to poetry? It's similar to the debate here with the lion eating his/her prey and the scientist making the great discovery.
Jeremy Bentham supposedly said that push pin was the equal of poetry even though that's a misrepresentation from John Steward Mill, with Mill arguing the quality of the pleasure mattered. Poetry creating a superior pleasure to a children's table game in Mill's view.
My take on the debate on the thread here is that pleasure is pleasure and the two are of equal value in the moment, but the scientist with his great discovery has the greatest pleasure over time. He gets to enjoy the accolade's as his discovery is confirmed and also gets pleasure from contemplating his discovery. He can use it as well as a springboard for future discoveries and pleasures from that. All consistent with the Epicurean perspective of mental pleasures being superior because they can be enjoyed in the present, past and future.