Really? And is that what the discussion is about?

First, fact remains that flight time is at least 6 minutes lower on that route. That AC elects to hide that in the time padding added in the schedule to deal with airports, having to wait for a gate crew etc., does not make that fact go away.

But that is by no means the whole story. Indeed, that ignores the fact that with its lower ceiling, and with its fuel efficiency deteriorating fast at higher speed, when trying to optimize a flight plan for fuel burn,there will be much less flexibility, and often the optimization will suggest a speed lower than the value used above. Plus, the lower ceiling will sometimes not allow reaching a less bumpy flight level.

Comparing the E90 with the CRA, it seems to me that the E90 wins easy on cabin comfort, but, for a big chunk of the AC network, the CRA wins for economics and operational suitability. Except for the relatively short eastern routes, for which the E90 is well-suited operationally.

And if you guys insist in continuing to disagree, please at least try bringing some technical argument to the discussion.