How about a visit to:

http://www.airlinequality.com/

Lounge access is identical as both are OneWorld Members access to First Lounges depends on your OW Status. For a more acurate assessment and advice we really need to know your exact aircraft type and configeration.

If you like a totally lie flat seat then you would be happier IMHO with the New CX configuration flights via HKG Non-stop to JFK.