this was on my 2000 pontiac formula automatic when i did gear testing for mikronite through vinci high performance. basically the easier it is to turn, the less energy is exerted and lower dyno numbers are a result. of course your acceleration is quicker, resulting in lower et.
this graph shows my stock 3.42 gear vs 4.10 gear.
this graph shows 4.10 gear vs 3.73 gear