Can a holder of the United MP Award Card who does NOT have any other MP card test something for me?

Note that this NOT the Explorer, Select, Club, nor Presidential card.

This is (I think) the no fee card that Explorer's can be downgraded to if desired. Descriptive link of what I'm describing is here, although no discussion about the fee.
https://www.chase.com/online/Credit-...ewards-new.htm

Can someone log into their MP account and test the availability of a hypothetical LAX > LHR flight for say March 2016 using miles?

and then log out, and do the same?

I'm trying to see if that card gives any improved availability like the Explorer for awards tickets. I doubt it...but there are commenters on various blogs who claim it does, which seems weird to me.

PS: I've noticed a big difference in the flights I was searching (North Am to Europe r/t) when logged in (with an Explorer card attached to the MP #) vs. not. For an unadvertised benefit its impressive.