One thing to remember is that not all readers have a Tapastic account, so even if you're getting views and not subscribers, it doesn't mean that people are reading and not liking it.
At least this is what I tell myself because my view count is similar to some comics here with 500+ subscribers, and I am not near that yet
If you're looking to get something other than recognition out of it, both are beneficial: Views generate ad revenue and subscribers can get you into the support program, so it's all good!