Someone's got anger issues. Did you count in your shroom math 4 globals per bloom? Somehow I doubt shrooms are doing 136k healing per bloom.
SotF will gain strength as our gear gets to the point where the regen aspect of ToL is less important, however ToL can be simply used as a 15% cd continuing to cast whatever you want, ignoring the ability to mass lifebloom and instant regrowth. Since it is a % it will also scale well with our improved gear. I don't think SotF will ever catch up. You actually get more and stronger ticks of wild growth by going to ToL when you need burst (Feng, Elegon p3, etc.).