A week? That's weaksauce, try two days hehe (This is a joke please don't think this is a reflection of my character.)
But real talk, now. Is there a reason for your preference? I'm actually a.... Huge hater of the anime, but I struggle a lot with these types of articles because while there ARE objective aspects like animation, story, characters, and junk. Solo Leveling is... Way different than each of these. And it is good for it's genre. So I don't believe it to be fair comparison.
Tbh I wanted to be all mad about this take but it's very understandable. As a fan of both manhwa it's not really a fair comparison. Not in a "Blank is so much better than blank" way more in an "Apples vs. Oranges" way. Solo Leveling is a bomb ass orange. And ORV is the best apple I've ever eaten. But you can't compare them just cos they're both fruit.