Oliver defeated Merlyn in the Season 1 finale, almost killed him if it wasn't because Malcolm seems to have some Lazarus Pit. And mirakuru Slade would mop the floor with anyone, so? They have shown Roy and Thea are not near his level, what is silly, is how anyone can become a great fighter or archer in six months. But since these producers (Berlanti and Guggenheim) wrote the Green Lantern movie thinking big head Hammond and cloudlax were great ideas, we can't really expect the best writing from them.
Since Batman '66? LOL
What's next, that Batman and Robin was a great movie too?
The Flash is good, but very flawed: the way Barry is dumb down when is convenient to the plot, Iris as a character, their relationship, forced love triangle, Eddie not very interesting so far, lame freaks of the week, etc.
The first Flash show (1990) and Smallville are way better than Batman '66, unless you prefer silly, campy superhero shows.