Bar Kochba was the Moshiach, but then he failed (And I heard this already from a number of places, and also recently Judea also said the same in his Torah show).
Not moshiach
PRESUMED MOSHIACH, yes . (for a torah jew that fights the wars of G-d, but as soon as he fails, we know the presumption was wrong)
See RAMBAM hilchot melachim.
The RAMBAM is clear on this.
there is no way anybody would say he was moshiach
Presume means. suppose he is moshiach.
We can then see what conclusion it leads to. And in this case, conclude whether he is or not..
presume is an assume x. It does not mean x is true.