He wasnt playing with 17; 17 had the boy struggling out there while he didnt even break a sweat have a scratch or gasp nor appeared to be breathing hardThe Manga has surprisingly been more detailed in explaining things so we might get more explanation or clarity on the fights Goku has vs. his peers.
If Goku is just gassing up everyone to think they're stronger and more clever than they actually are thsn that's fine but it doesn't seem to be playing out that way or at least it's very hard to tell if it is.