Not really. For example, on a large screen LCD HDTV, an analog signal won't look as good as it does on a smaller screen analog TV. On the other hand, an over-the-air digital channel in the U.S., received via a set top converter on an old analog TV, can look a lot better than the former analog signal from the same channel.
If you're unsure about a set or monitor and can't figure it out from the user's guide, search the make and model in Google. A hit on several different sites, Amazon in particular, will give you the set's specs.
