How did Jennifer became more successful than Karan Singh Grover?

Both of them were always quite popular in TV space. KSG was at all time high with Bollywood debut and Bipasha rumours and was about to become the next big thing. Jennifer was ig on a hiatus. Cut to, some years pass by and she became more popular than Bipasha and Karan. Why did Karan had such a massive downfall? How did Jennifer became such a big star, even bigger than Karan? Like initially, everyone thought that Karan is set for his life. What kind of astrological/destiny uno reverse was this lol? Jennifer rn is one of the biggest ITV star atm. I had bets on Mouni Roy becoming next big thing in bollywood but even she's stuck in adult ott show genre like Karan. Was sticking to TV the best thing Jennifer did?