Yeah, the problem is that if one side tells 100 lies, and the other tells 1 lie, you can't correct all 100 lies, but if you only correct the most egregious lies then statistically you'll only be correcting the one side, and if you correct 1 lie from each side, then you make it seem like both sides lie equally. The Gish Gallop wins again.
Especially for live fact checking the greater the number of lies and the more obvious/blatant those lies are the more likely someone is to get fact checked.
We would have to fact check if those numbers are correct.
Oh wait, fact checkers don't work, better just inform yourself and make up your own mind, and don't just believe some supposedly authoritarian figures.