There is no doubt in my mind that Nigel Calder is an expert in many fields but I do not think he reviews
and compares products. As Gord points out, Nigel does nothing for nothing and I suspect that he is compensated by the manufacturers of the products he works with and writes about. Consequently, if there are shortcomings in a product he's been given, I doubt very much he's going to say anything negative publicly. He's not going to bite the hand that's been feeding him so I doubt Nigel will give much of a critical review of the Odyssey batteries.
That said, Nigel is primarily using the batteries in a propulsion
system. I suspect that charge acceptance rate is much more critical than robustness to deep discharges - so they may work
grand in that application. The only deep discharge "data" I have seen is the statement that they will withstand up to 400 cycles to 80% depth
of discharge. That might be excellent but I would like to see their performance at 50% DOD or, even better, a plot of cycles vs %DOD. But I must admit, their charge acceptance rate is awesome and opens up some possibilities if they can withstand the discharge rigors of cruisers.