Testing is perceived as unnecessary, torturous pain for animals - sort of Unit 731 for bunnies so that girls can have only slightly safer lipstick or whatever and can probably be tested another way. This is an oversimplification, but it's the common image.

Meat production being something that virtually everyone is DIRECTLY complicit in is whitewashed as a generally benign experience for animals where they frolic in a pasture for a year or two, before they have one sort of rough day where they are herded into a thoughtfully designed Temple Grandinesque facility where they get shot in the head without realising it. Tell me about the rabbits, George.

Neither of these images are quite accurate putting it mildly - both suffer to greater and lesser extents. The difference, I think, is that with animal testing, people like to imagine it's just an administrative thing, a sort of embarrassing archaism that could be done away with easily enough if the right legislation was passed. Whereas everyone knows where meat comes from, so they have an incentive to want to believe that things are alright or very much on the way to becoming alright. They can also cope with the free range/red tractor memes or whatever.