These users are evidently two different persons (though affiliated in some way, maybe friends). Shotev's Russian is terribly broken at times (with a lot of spelling mistakes which native speakers usually don't make), while bitevil's language is fluent colloquial, the one you would expect on a forum like this...
Go on with reading their post histories
I only found the same orthographic mistakes and many posts in the same topics
Their writing styles are different, though I have a firm suspicion that someone else had been occasionally posting under shotev's account (especially recent posts), who doesn't speak Russian very well. Just an
example of his broken Russian. The specificity of spelling mistakes and the choice of words in the quote below betray a non-Russian speaker (the real shotev's posts don't have such mistakes at all):
Oнo бyдeт пиcaть тaк пoкa нe нacтyпит 6 пoдтвepждeний этo нe oбeзaтeльнo Bы мoжитe зaкpыть этo oкнo
Пo ycлoвиям пpишлитe cкpиншoт в ПM c тpaнзaкциeй я пpoвepю в cиcтeмe и нaчиcлю 1 LTC
Someone (the mixer's owner?) is promising to credit 1 LTC on the conditions given in the campaign thread