One major component of the review activity tab on your profile that you must understand is that deleted posts are never shown there. No matter what queue the review happened in, if the parent post ends up being deleted, the review task will also disappear from your list shortly after. In that sense, you should not consider the number of reviews in that tab to be in any way accurate, nor should you think that it is an exhaustive list of all your review activity. It's not.
Having said that, there's something else to display about showing Delete-type actions in a list where those successful attempts to delete end up being hidden anyways. Essentially, we have a queue wherein your delete actions resulting in the post actually being deleted always cause the post to be hidden from your history. We then end up with users whose history only composes of Delete-type actions which were unsuccessful, which looks kind of crappy. No one wants a history filled with only non-success. So Delete and Recommend Delete actions are hidden from that list altogether.
At least, they're supposed to be. Whether the ReviewTaskTypeIds changed or the wrong ones were used in the first place, the query that fetches that list actually excludes Recommend Delete and Recommend Close results, incorrectly.
As far as the votes tab where you can see full-out delete votes you've cast - that's an entirely separate beast most easily distinguished by audience. The audience of the votes tab is you and you alone. You can see all of your delete votes because only you can see that list and in order to delete a post you have to have access to see the deleted post anyways, so it's not a big problem. (Also note that Recommend Delete is not an actual vote, just a review task result. Deleting from that queue adds both a review task result and an actual delete vote.) But your review history is a public list, visible to everyone, and thus cannot have deleted posts contained within it. So we end up with the dilemma described above.
Will any of this ever change? I mean, I hope the bug part of it gets fixed. But the rest, probably not.