Fears gets to the rim at a massively higher rate than Tre, also draws tons of fouls, turning shots he would make at the rim into Free Throws which don't get reflected in the rim%.
Fears has great shooting indicators from everywhere except off the dribble 3s. He just took a ton of off dribble 3s. Fears shoots as well with non-rim 2s as Ace Bailey (46%)
Fears has a 28.6% assist rate compared to Tre's 16.5% assist rate. When players make more passes, they have more turnovers generally. A/T ratio is only a small part of the playmaking picture. Tre is masssively handicapped by the fact that he can't consistently get into the paint and create advantages for others.
Fears profiles as a boom or bust offensive engine guard. Tre profiles as an all shooting no defense off guard. That is why some people see Fears as a better prospect.