Definetly in terms of Fire Control System the tanks seems to be better than T-62 and it's other North Korean derivatives like Chonma-Ho variants.
In terms of firepower it is probably also better and armed with 125mm gun not 115mm. Of course depending on ammunition avaiable to KPA, will depend overall effectivenes of the vehicle firepower. I doubt that they have even medicore ammo, rather different clones of 1960's and 1970's, in best case 1980's level of ammunition.
The protection is interesting tough, not a match for South Koreans and US of course, but it seems that these tanks are first attempts of North Korea to use sort of spaced and composite armors. Pokpung-Ho seems to use similiar concept as some Soviet T-xx tanks with cast turrets. Also the latest variants show ERA mounted to the turrets.
So as far as these are for todays standards obsolete tanks, not a match for South Korean K1, K1A1 and K2, as well as for US Army M1A2SEP v2's used by 2ID in that theater, still well handled by trained crews, these KPA tanks can be dangerous and should not be ignored and underestimated.