I know a lot of people consider 2 to be one of the best P&C games ever made but I don't think it's as good as the first game.
For one, the gamplay. MI1 has Melee island and the 3 trials. It's much closer the theme of being a pirate than what is in 2, not to mention insult-sword-fighting being the single best puzzle in any P&C ever made. MI2 also some really out there puzzle solutions that can only be solved by trial and error of trying every single object on everything clickable in every room (which is P&C gameplay at it's worst and something they should all try to avoid). The pacing of 1 is also much better between the different sections of the game while 2 spends most of the time being bogged down getting the 4 maps.
Also, the first game doesn't appear on every single "worst endings of all time" list like 2 does.