I think TRON is faster and cheaper than BSC, maybe because there aren't many projects that use the TRON platform so it's faster and cheaper. If we pay attention, the BSC transaction fee is increasing even though it is still below $1 if we use Metamask or Trustwallet, but if we use exchanges the BSC fee is around $2-$4.
Fees on BSC are rising because many people are using the Blockchain. The higher the network load, the higher the fees will be. This can happen to any other Blockchain network no matter how scalable it claims to be. TRON is cheaper and faster than BSC simply because not many people use it. The day when TRON experiences high network load, will be the day when fees will soar all the way to the moon.
At least, we're not constrained to a single blockchain network. Things would've been worse if there was only one blockchain in existence. With a diversity of blockchains to choose from, high fees and slow transaction confirmation times no longer becomes an issue. It's not about TRON or BSC, but rather Blockchain technology as a whole. As long as decentralization is prioritized, nothing else matters. Just my opinion