The easiness with which this objective is defied validates the theory i've formed thus far;
regarding the total lack of realism that logically follows upon the code that's apparantly built-in to make the player believe he can be as good as the team he picks
(which is a huge nonetheless rampant fallacy) by:
1) Paving the road for the expected title to be won more easily with a team that's expected to and,
2) Prevent at all costs a player from relegating,
for in the simple minds of the EA dev's,
they'd expect no player would want that (relegation) to happen to them.
So surely you might find your self in relegation battle for quite some time,
yet ever actually being relegated?
I very much doubt there's a reasonable probability of that happening,
to say the least.
So one of the realest issues when it comes to this problem you've been facing, which we all have been aware of facing to various extents,
is directly affected by
the problematic way in which the AI's difficulty is adjusted to the pretedermined level of competence a player is expected to attain, with regards to the objective of its team.
So my concise advice is to look for a team with a medium-sized objective and try to defy that,
see how the AI begins to react then.
It would also be good to try to be attentive to how the AI behaves whenever you're trailing behind your goal,
And, finally, if i were you, after having gone through these trials and tribulations,
I would already long have set myself the challenge to try to beat the teams that i can expect will be dominating me,
Cause once you'd unexpectedly beat one of them,
or hold them to a draw,
you might be surprised to see a bigger team perform more solidly next time.