It's complicated.

There are more pilot weapons, which is nice, and a greater variety that doesn't lend any one weapon a feeling of superiority. In T|1 you would never see a Hemlock, and 90% of players ran the Carbine. It's more balanced in that sense.

There are also more and better weapon variations, with choices between secondaries and anti-titan weapons.

More tactical abilities that lend themselves to better game-sense and movement, which is nice.

A ridiculous number of cosmetics, skins, etc.

Burn cards are gone, replaced by pre-loaded boosts.

Way more titans, with locked weapons according to chassis. I actually like this as it balances the titans more according to roles and playstyles. However, you can customize their abilities, which still allows for individuality.

Map design is somewhat limited, but T|1 was the same on release. The maps aren't as vertical, and movement isn't as intuitive, in my opinion. That's the weakest part for me.

Titan health is no longer bolstered by regenerating shields, but there are titan "health packs" throughout the battlefield in the form of batteries, which you also pull out when rodeoing an enemy.

The game modes are fun, with fewer lists than T|1. They're innovating and well done.

The campaign is fantastic.

Movement is still top-notch.

I highly recommend the game. It's definitely worth $60.