Though perhaps not sober enough.
I can't have it that Nacarat ran to 155 - a mere 3lbs below his official mark of 158 - which in itself is too high (imo).
Nacarat won what looks (in hindsight) an weak Racing Post Chase, and whilst the performance was visually impressive, the resultant mark of 162 he was given looks too high. He has failed to run to within a half-stone of that mark since, and it can reasonably be argued that, as far as yardsticks go, he may be less than reliable - insofar as his chase mark is concerned.
It occurs to me that, because he excelled in that Racing Post Chase, there is an assumption that the track suits and that he can run more-or-less up to his mark. I personally think that point is moot, and if his mark is wrong anyway, the error is ultimately compounded.
As EC has suggested, anyone rating the race through Riverside Theatre is basing it on conjecture, and those rating it through Nacarat, must - by default - have complete faith in his OR.
Ultimately, it boils down to this. Would you fancy Long Run in a handicap off 180, 179 or 178 - the respective marks we are debating here?
As far as I'm concerned, he would have no chance of winning a handicap off that kind of mark - even at Kempton in his ideal ground conditions. I'm interested to hear from those who support these ratings, whether they would actually feel differently if LR was thrown an RP Chase entry, and found himself having to give a stone to the likes of Alberta's Run, or 20lbs to the likes of Punchestown.
Edit: I'm not trying to be nippy about this - I'm genuinely interested.