N0m: I didn’t say that he didn’t understand. I said it took him an awfully long time to understand a small amount. In my theoretical example it was 10 hours to understand half a Daf. But understand it he did.
By the way, even if he wouldn’t understand it, which wasn’t the example I earlier gave, he still gets full credit of Limud HaTorah for all his effort. As much as a Masmid who put in an equal amount of effort and time, and came away understanding 100x more and 100x better.
A Yeshiva or a Kollel is better off with the Talmid who spends 10 hours a day seriously learning, even though he only finishes half a Daf per 10 hours, than a Talmid who spends 2 hours a day seriously learning, but he fully understands inside out 5 Blatts every 2 hours, but then spends another 8 hours a day schmoozing, socializing or catching up with what’s going on in the world.