RFC is discrediting himself by making pretty big assumptions, I sympathise with what he's saying somewhat, whilst not totally agreeing with him (but not with his predictions).
Short term, we would've been worse off, because relegation was a certainty if we had gone into admin (likely had SISU not come in), but after that, no one can account for anything, we could've had a Southampton-style like recovery, but likewise, a Luton/Pompey-style further decay.
I do think Alki David's comments are worth looking into (multi-billionaire who was looking to invest before looking at the finances) he said: "after looking at the finances, and numbers, the club is falling apart", quickly pulling out and wishing whoever took over 'good luck' and what we do know, is that hedge-funds make risky investments
http://www.coventrytelegraph.net/news/coventry-news/alki-david-pulls-out-coventry-3103754