Don't want to de-rail the match thread any further, so new thread for a new discussion.
I don't know if I've got the maths spot on for this, but a glance at Statsguru shows that the average RR in T20Is is 7.52, with the average RR for ODIs played since Jan 1 2005 being 5.01.
Based on England's RR of 9.55 yesterday, which is 129% of the average, an equivelant ODI score would have been 318, which according to duckworth-lewis.com would have seen the West Indies set 171 to win from 20 overs, which immediately seems like a much fairer total - in this hypothetical scenario, West Indies would need to score at 8.5 an over in response to a total of 6.36 an over, as opposed to 10 plays 9.55.
I think D/L is a good system, however the last 2 WC games between England and West Indies have shown its flaws when applied to Twenty20 cricket. IMO, the maths involved definitely needs an overhaul.