Just like the title says.
An AI that I was facing even did it.
One of the players I faced that did this had a meter a little towards his level 3 and somehow used his level 1.
No he didn't see wrong. this has happend to me using ratchet and sackboy, where I actually uses my lvl1 instead of a level 2 while i was a little less than halfway to level 3. It sometimes gets annoying because you waste them like that.
When he did get it, I heard his TV yell LEVEL 3 through his mic, so yeah, sometimes it's a bit inconsistent.
Usually it's correct though.
Toro to be specific.
One of the people I seen use their level 1 when they had a 2 had their meter completely drained to 0 after doing it.
This is actually pretty common, things like this are easy to catch if you have a friend or two over and you invite them through your Vita through the PS3 on the same console using two different accounts because sometimes the Vita can have some really weird bugs going on, like I remember doing that with a few friends of mine in Blackrock stadium, at some point in the match the platform in the middle that goes up and down from time to time was being buggy in the sense that on my Vita it would show that it's up however on the PS3 it was down, and I also remember another match with my friends the same way where I had my level 1 and almost at level 2, my Vita shows me at level 1, but the PS3 shows me at level 2.