X-COM apocalypse vs XCOM 2 advent and alien forces

[Thelastranger]

On a mission that goes wrong the avenger damaged barely escapes into an unseen portal. Exiting seemingly above another an unknown pristine advanced city in the middle of ruined landscape.

The ship is forced to land when faced with unknown fighters bearing the insignia of X-COM. After some massive confusion between the two, the truth is revealed.
The year is 2083 the aliens invaded in 1999 and X-COM never fell and defeated three more invasions.

As a result earth 1 xcom asks for help from their more experienced 'Earth 2' counterparts.

Note:This takes place three months after X-COM apocalypse ends the end weapons (davastator cannons, entropy and dimension missile launchers etc)and psionics can still work on the other side

Yes this includes THE xcom 2 DLC

Info
https://www.ufopaedia.org/index.php/Apocalypse

https://www.ufopaedia.org/index.php/Ali ... ms_(XCOM2)

future reference
xcom 2 earth=earth 1 or E1
Classic X-COM earth=earth 2 or E2

Just how effective would the earth 2 X-COM be against advent and aliens?
Just what would they think of their earth 1 counterparts and vice versa?
Could a fully equipped Earth 2 X-COM apocalypse squad kill an avatar?
What would the hardest opponent for them?
How powerful is disruptor armour and shields by earth 1 xcom standards?

[Adam Reynolds]

Is there any way to judge this outside of game mechanics? That is generally a deal breaker in these type of discussions.

[Thelastranger]

Is there any way to judge this outside of game mechanics? That is generally a deal breaker in these type of discussions.

I know apocalypse has 2 modes turn based and real time, the later gives bonuses in dual wielding weapons. Larger teams fifteen

xcom 2 uses small teams, with classes.