I posted about 10 things that makes trials different from elimination below.

Lol get rekt

The mindset of going flawless, the usage of boons, the specific bounties for the specific trials, light levels enabled, the force of a three man fireteam, the random teams you have to face instead of the same people in general, utilizing the same map, the strategies, the rewards, the lighthouse, etc It's a different experience. Very little about it is the same except for the actual rules of eliminating the other team gets you one round win. Bang bang.