This article itself points out that they look the same, it is the genetics that is different. On other worlds there would be strange solutions to niches but there would also be some oddly similar species as well. If you look back at the history of mammals, forgetting the understandable fascination with dinos, you will see that there have been many different kinds of mammals but certain forms are roughly similar: herbivores, large (very large) grazers, carnivores, tree dwelling. Not always but quite often there are similarities. On an alien world given similar situations then some similar forms are likely to evolve. However, sometimes a new environment may arise that creates new opportunities, if they are unique to a particular world then the creatures may not resemble anything we are familiar with. For example, the evolution of grasses and flowering plants. Some things would be universal: vision using light (IR to UV approximately), two eyes, smell sense, nervous system, some kind of brain though it may be more distributed, herbivores vs carnivores, etc. Life being Life however, there is always the opportunity for surprises.