Compared with NDS, PSP games are suitable for players who play for a long time. The game screen of PSP is several grades better than NDS. And the attraction of each masterpiece is much deeper than NDS. However, the disadvantage of PSP is that the number of games is a little less than NDS, but I don't think there are many games, but it's okay. But the biggest disadvantage of PSP at present is that the latest system has not been cracked, but it has played most games in the past month or two. But it's only a matter of time before it is cracked. There were so many good games in PSP before, I believe they were cracked before they were finished.
Regardless of the game, PSP has more functions than NDS, as the above two have already introduced. It should be added here that NDS has a camera function, but don't count on pixels. In addition, PSP has a relatively high sales volume in China, while NDS has a relatively high sales volume abroad.