Gold value of Executioner's Calling and Bramble Vest is ridiculous against Soraka

http://leagueoflegends.wikia.com/wiki/Executioner%27s_Calling

You pay 375 gold for the passive. Soraka's W heals mid-game around 300 HP. Executioner will reduce it by 40%, by 120 HP which is worth 320 gold.

Executioner is basically already worth when it reduces one W and you will usually use it multiple times and don't forget the Q heal, the R heal, the summoner heal, redemption heal and ardent censer drain.

In mid diamond 8 out of 10 games the enemy adc buys executioner on the first back.

Bramble Vest is even worse where you only pay 200 for the passive (which is GW and reflecting 20 damage).

Taking a look at a typical teamfight: https://youtu.be/1r7YpckIL_I

It reduced 4 W heals, R (on 1 target) and summoner heal (on 1 target), equal to 780 Health or 2000 gold value. Yeah you read right 2000 gold value of a 375 gold item passive making the passive 533% gold efficient in a teamfight against Soraka (one of the most gold efficient items rageblade reached 160% only at max stacks). This is not even counting other heals on the team like Maokai passive, Kayn Ult, Ardent Censer, Vlad Q W, ADC lifesteal.

I don't know how GW can be considered a soft counter when it is so easy available (even a core item on mages) and has so much impact.