Flavor is likely very complex, probably includes a combination of proteins, minerals and starches.
That sentence indicates that I really don't know anything about it . But ... I'm gonna guess that sugar is only a part of the complexity. If sweetness is high, other flavorful compounds may be lacking.
Saying that is my cover for admitting that i prefer tomato sweetness. I find that in hybrid cherries — my choices. Oddly, Yellow Jelly Bean stands out for me and one reason is that it tastes like a red cherry.
BTW – I've read that the skin to meat ratio of cherries means higher sugar content is possible without splitting. Degrees Brix, the horticulturalists say, for measuring sucrose.
after last year i don't think i could get sweeter ones.
using baking soda would change the pH of your soil a little and that can make more of certain other compounds available to plants.
i'm not too likely to do it here, i need to go the other direction for pH with some elemental sulphur to counteract the well water which has some calcium in it.