88 > 66. the Shoshone (on a very good start) are 22 turns ahead of the Celts (on a very bad start), not the other way around. Me thinks you are reading what you want to readSo 22 turns for "Extra tiles when a city is founded and a bonus to defend in owned territory."? Sounds like a good deal.
G changed it to 3/3/3 and upped additional culture/science pnealty per city. That additional per city penalty will help balance Lugh out (much more than just higher policy costs will). Were I gambling man, I would still place my bet on too strong, but its worth playing first