Same hand Percentages

When a player is all-in and called, the hands go by quite quickly and you can’t pause so I’m not sure this is true, but if anyone knows then reply here.

Basically I think if the two players currently have the same hand the online site will say each player has a 50% chance of winning the hand.

Lets say one player has J10 of clubs and the other had J2 off-suit (pick any 2 suites)

The board comes KKQQ with 2 clubs.