This is entirely my opinion and not influenced by any social media (no time for that).
I watched only 3 OTT episodes including the launch. I didn't watch Pratik's game apart from that. What I found similar is the way he conducted himself in both for first 3 episodes.
His game looks very well researched if not planned! It is basic human nature to look for something different than the rest and that's what he did in first few episodes, so that he is noticed and everyone remembers him by name. The aggression in next 2 episodes cemented that further, so other contestants either talked good or bad about him and the viewers also. That's why everyone felt that he is the center of the show.
Next 2 days, The Vidhi incident happened and everyone tried to explain where he went wrong. None blamed him, but he kept telling himself and the audience repetitively that he is blamed. He could have genuinely apologized and end the topic there and that wouldn't even get mentioned in WKW. What he did was a build up (property damage and this) and he made sure that WKW was abt him only. There was no reason for him to say that he would do the same with his mother/sister.
Next phase started after the bashing he got on WKW. If someone is doing good in general, people usually don't notice it or mention it. But if you see someone getting better with behavior after a low point, small good gestures also get noticed. This is the exact case of Pratik.
Now he consciously makes an effort to not say anything bad about anyone, which is easily noticed. For example, KK was wrong to tackle him to the concrete ground and he had a choice to retaliate, but he didn't. Pratik was very angry right after that tackle, but he got quiet within a few mins literally as if he remembered that he doesn't have to behave angry or say anything bad about anyone.
He didn't fight or argue with KK, not even a discussion in case if he wanted not to retaliate out of respect for him. No-one will leave this opportunity unless he is waiting for WKW which he surely is. He doesn't want to deal with BB, but on WKW for more audience. Until then, he will try to get as much sympathy as possible from viewers to secure his base until WKW.
p.s. I don't want to mention his task playing strategies (or no strategies besides start on the wrong foot) here.