That's only a reasonable comparison to make, if there are no other options. If there are other options, which is clearly the case, you have to compare to those.

A refugee crisis isn't all that bad by the way. Politically it's a problem but economically a 2016 scale refugee crisis every year would be quite good for Germany. Germany needs huge amounts of people, especially people working in trades, to do the work necessary to switch heat pumps, install solar, build more housing etc. They have to come from somewhere and demographics means they have to come from a massive increase in immigration.