I see some similarity between this season's contestants with earlier seasons & how they'll fare on the show. Let's have a look:
Pavitra -She's giving me BB7 Kamya Punjabi vibes, very strong personality, great in tasks, but wasn't able to become the frontrunner, & will likely be voted out sometime before the finals due to lack of fanbase.
Nishant -He's like BB10 Gaurav .. very pretentious & image conscious, speak after a lot of calculation & extremely diplomatic. He'll stick around for a while, but will be evicted in the 2nd half of the game.
Rahul -I'm getting BB9 Aman Verma vibes from him, people expect him to be strong & go far on the show, but failing to stand out & lack of fanbase will seal his fate sooner than later.
Jaan -If he survives the upcoming eviction, then he might make it very far like BB11 Puneesh or BB12 Somi/Surbhi. I can't compare him to Arti, as she had a decent fanbase (mixed with a strong PR) who were voting for her, he's more like Puneesh or Surbhi who basically had no fanbase at all but was carried very far by BB's manipulation.
Nikki -She's the BB9 Mandana of the season, who'll be used & promoted by BB till she's useful, she will most likely be kept safe till the finals, then makers won't bother wherever she places.. but until then makers will promote her a lot.
Rubina/Jasmine/Eijaz are clearly the frontrunners for the winner, so I won't compare them to anyone. Currently, they have equal chance of winning.