Retzlaff and Taysom are very very different kinds of quarterbacks.
It's like saying Khalifa reminds you of Dikembe Mutombo. They're both centers, both basically 7' and 265 pounds. And they're both good players. But stylistically they are ... not the same at all.
Not a knock on Khalifa to say he's not Mutombo. And not a knock on Retzlaff to say he's not Taysom.