Yay ! I thought I was the only one on that website to actually use CFW but still buy games in stores (or buy games at all actually)...
I don't know about DS carts (I don't have any) but yeah, all my retail carts work on rxTools. Except Triforce Heroes on my New 3DS since it wants a 9.9 FW and the emuNAND can only go up to 9.5. But on my Old 3DS Triforce Heroes works great so I don't really care.