I do agree i got surprised a bit by 魏大勋 acting as i knew him and saw him only on reality show. So when i saw him on Fireworks of my Heart, i do recognize he can act but i don't think he is that good till so many videos praising him. I am OK for 魏大勋 in both drama and reality shows. I think can be both. Like Show Lou he too in many reality shows and acted funny however, when he is in concert or switch to be singer, he really impressed us with his performance. I do think a successful artists is able to handle multi-roles actor/actress, singers and reality shows. In reality shows the viewer can see the artists rather the role he is playing in the drama or movie. It is two different things.
I think if the artists is able to act well they will be able to attracts the viewer into their act when acting, only those acting skills that is so so will have the problem viewers out from their act and thought of them in reality show.