I'd say hes good or not so bad whatever way you like it. He's able to kill yasuo like 33% of the time so that aint so bad. (unless yasuo considers himself to be bad then it would be bad yes) I think I've played vs poseidon some 1v1 and its usually close I think.
was my first 1v1 for like 2 months, so i moved really bad l0l
first 1v1 score vs him was 11-1 and second one 5-0