Well, you could probably say much the same about different screen renderings of Superman or the Hulk or Tarzan, say. I'm more concerned with finding a distinctive story approach.
I do think they've succeeded in making the Flash's speed effects look quite distinctive from the show's version. The show has Barry trailing orange lightning; the movie version is more like he's engulfed in a blue energy field that lets him exist at an accelerated time rate. I compared it before to the Abrams Star Trek warp effect, but it also reminds me of the TV show's Speed Force environment. If we go with the conceit that the DCEU is one of the parallel Earths in the TV multiverse, then maybe this iteration of Barry is actually somehow drawing the Speed Force out of its own dimension and surrounding himself with it in the physical world.
I like it that the DCEU Flash's costume stand is a crash test dummy. His setup has more of a makeshift flavor, and I guess even his armor has sort of a cobbled-together quality.
I didn't say their characterizations had to be different; I just hope the movies do something storywise with the Flash that feels new and non-redundant.
