Why did Batman Forever resonate with audiences better than Batman Returns (1992) and Batman & Robin (1997)?
To put things into perspective, Batman Forever grossed $336.6 million worldwide. It was the sixth highest grossing film worldwide in 1995. Batman Forever was also the highest grossing film domestically from within the entire calendar year of 1995. I believe that Toy Story ultimately made more money among the films released in 1995 though.
https://www.boxofficemojo.com/year/1995/
The point is that Batman Forever appeared to be a bigger box office success than its immediate predecessor, Batman Returns, which grossed $266.9 million worldwide in 1992. Like Forever, Returns was still the highest grossing film within its entire calendar year, but it was still a huge drop off when compared to Batman 1989.
https://www.boxofficemojo.com/year/1992/
Returns only made $162,831,698 domestically whereas Batman 1989 made $411.6 million worldwide and $251,188,924 domestically.
Batman & Robin however, only made $238.2 million worldwide and barely passed the $100 million mark domestically (it in the end, only made $107,325,195). It add insult to injury, it wasn't even in the top five biggest box office hits in North America for 1997.
https://www.boxofficemojo.com/year/1997/
A rerelease of the original Star Wars film from 1977 made more money than Batman & Robin, which has since become officially regarded as a box office bomb.
https://bombreport.com/yearly-breakdowns/1997-2/batman-robin/