I have a question it doesn't directly relate to the topic but more to vPoW-
let me give you a scenario - :

is there an attack vector that exists here:

lets say we have for example 3 "algos"

1. Xa

2. Xb

3. Xc

now (in this world) - there is a beautiful community developed CPU and GPU miner for both

what this miner does is it can mine each of the 3 and choose the lowest diff of each -

is there a potential attack vector where the miner can "game" the next block i.e by jumping form aglo to aglo -

so exploited some how the way in which the next block is determined?

sorry for the newb question.

what i'm asking is:

what is the mechanism that determines the next block is it really random?