Online guides state that IVs impact your chance to gain stats on level up. That is, each character has a range of IVs which impact their chances of rolling well when leveling up.
Stats can also be increased by merging characters.
Does this mean that the advantage of high-IV characters can be overcome by merging lower-IV characters? This would imply that all versions of the same character have the same potential, just a different amount of effort to get there. Is this true?