I posted the evidence you seek 2 pages back, here let me show you:

__Alacrity Percentage__ = 30 * ( 1 - ( 1 - ( 0.01 / 0.3 ) )^( ( AlacrityRating / 60) / 1.25 ) ) )

__Surge Percentage__ = 30 * ( 1 - ( 1 - ( 0.01 / 0.3 ) )^( ( SurgeRating / 60) / 0.22 ) )

Now here's a little example for simplicity sake:

Let's say you have a single heal that heals for 5k and is instant and spammable. Also you have 40% crit (an absurdly large amount which favours surge, i picked this to demonstrate how much stronger alacrity actually is).

That's a base HPS of 4.2k without any surge or alacrity rating.

Now if you spend all your 192 budget of 1100 stat on

- Surge: 28.22%

which is an HPS increase of 8.95%
- alacrity: 11.75%

which is an HPS increase of 11.75%

and if you do a 3/7 split:

- Surge: 17.15%

which is an HPS increase of 5.4*%
- alacrity: 8.81%

which is an HPS increase of 8.81%
- together: 14.254*%

Happy?