The requirements text seems to carry different meanings in different places for the tag badges. I shall use the gold tag badges as an example
Gold badges page
The text explaining the requirements for the tag badges appears to be inconsistent. For example here on the gold badges page the requirement for the gold tag badge is:
You must have a total score of 1000 in at least 200 non-community wiki answers to achieve this badge.
A score of 1000 could imply 100 upvotes (at a score of 10 a piece, possibly with adjustment for downvotes).
Specific badge page
On the other hand the badge itself says:
Earned 1000 upvotes for at least 200 answers in the ??? tag
I realise that score is a somewhat ambiguous term but I expect others will share my score=reputation assumption. It is at the very least ambiguous at present.
Even if we assume score=votes (which having looked carefully is clearly the case) then they remain subtly different as the first includes downvotes whereas the second interpretation doesn't.