essentially they are the same game but they behave wildly differently. i'm assuming that they are each playing to ±30% but while FC is a banker, IS seems only good for a slow £1 win. a pub i was in yesterday for the rugger had a titbox and a (diabolical) ind:e build in the GWHL cabinet.
played each game twice; +£8 on FC, all square on IS.
Of the two I definitely prefer Football Crazy and will usually invest 50p when I come across an Ind:e build with it on. I'm not brilliant at it though and so for me, £2/£3 is the most I can hope from a game, and that on a propitious day. But in paying mode I think I agree it's a bit kinder than itBox soccer.
itBox soccer I haven't played for months; before your post I'd have assumed it went months ago but lo and behold, when I checked a v65 this lunchtime, it was still there. I suspect IS perhaps has a flatter payout profile than FC - it's less likely to spurt out £4 at you, perhaps, but easier to get £1 on an ordinary go. I prefer the gameplay on FC a little though, which is what swings it for me, but neither of those is what I would call a banker!
Crosby - what's your FC record? I know DMAC of this parish was an absolute hotshot at this back in the day and recorded some monstrous times - from memory I think he may have got near six figures. No doubt he will tell us when next he's on this board.