Personally, I have no problem with either of those albums getting beaten by Crystal Logic if enough people vote in its favor. To be honest, I'd rather see people vote sincerely instead of being coerced into voting for something they don't like because it was "influential". If you want to put Sortilège above Kill 'Em All, by all means, go ahead. If you feel that you enjoyed Heavy Load more than Show No Mercy, great! Put it on, if you want.
Besides, I'm actually quite liking the variety in a lot of people's lists so far and this is coming from a guy whose top 10 list for this year changes quite frequently. Besides, if people want to get into more varied stuff from the '80s instead of the usual names being dropped on mainstream sites, that's a pretty good thing in my book. Getting someone to find something that they wouldn't have found otherwise is a great thing.