That's not the only factor. Also, just because you're 5/24 doesn't mean you can't get a chase card. I got approved for a card last week and I'm /24
Maybe you can get one in here or there but you have to spend time on the phone to get it through and only a small likelihood. Not worth it imo but for each his own.
9 of my cards were auto approved, and the 1 I had to call in for just needed limit transfer and took 5 minutes.