It is different if you tag.
However, for arguments sake, I don't remember that exact battle, but lets say I jumped in after you had started a relatively even battle with Storm. That is the type of mechanic I would like fixed, there should be no 2min timer, if the BRs are within 10% the battle should close instantly.
Maybe mechanics like this would not be for everyone, but I would like to see them on a portion of the map much larger than the solo patrol zone.