I have never heard of anybody getting a fuel saving when going up a tooth on the countershaft sprocket on a 650 if that is what you were looking for.
On my Wee I got a fuel saving when I "dropped" one tooth from the front.
The Wee does not have enough HP to comfortably pull through the air so a greater throttle opening can be required to maintain speed, adding 1000rpm helps with that.
I have never owned a Glee so can't really make judgement on that.
Some of the 19 rides in my shed
2014 V2, Snoopy
2009 Wee, Pumbaa the pig
WR450F, The Blue Postie Bike
YZ250N smoker with rego, Stinky.
Yamaha MT09 (FZ09), The Scud missile.
Club Lead not Club Med.
He with the most toys wins.
Out of my depth in a puddle.
Live life on the edge you will see more that way.
Ridding a motorcycle keeps things in balance.
At the end of each trail and at the end of each day history is made.