No, not at all. The problem I have is that most people tend to focus only on Dark Side of the Moon for Floyd and Stairway to Heaven for Zeppelin, when in reality there are so many more masterpieces that no one pays attention to.
Wish You Were Here is my favorite album ever and I think it's better than Dark Side. I mean, Shine On You Crazy Diamond is such a masterfully written song and each track meshes perfectly with the next. And , ending the album with the continuance of the first song is just sick, considering that altogether Shine On is 26 minutes long. And that's not even mention Meddle, which came out before Dark Side. Echoes is probably my favorite or 2nd favorite song by Floyd. 23 minutes and just pure ecstasy for the ears.
As far as Zeppelin goes, most people think of Stairway instantly and that's it. Plus with their whole backwards Satan lyrics, a lot of people are turned off by that. But they have so many amazing songs, on every album. Zeppelin I is one of the best debut albums of all-time. Then you have other songs like Achilles Last Stand which is my favorite song by them, Trampled Underfoot, Battle of Evermore, D'Yer Mak'er, Fool in the Rain, The Rain Song, Going to California, Over the Hills and Far Away, Heartbreaker, Kashmir, The Ocean, Tangerine, When the Levee Breaks, What Is and What Should Never Be, etc...the list goes on and on.
I honestly think people severely underrate their musical abilities and the sheer genius it takes to make so many of those amazing songs. And when I hear people talk about the top bands of all time, I hear a lot of Beatles, Dylan, Rolling Stones, etc, and I honestly think Zepp/Floyd is better than any of them, easily. Stairway to Heaven is probably top 5 best song ever. And I don't think these two bands get enough recognition, Floyd mainly because they get viewed too much as just stoner music. I remember when that Rolling Stones list of the 500 greatest songs of all time came out, the only Pink Floyd song on there was Comfortably Numb, which is amazing in itself but not their best, and that was ranked in the 100s or lower. The number one song, I think, was Can't Get No Satisfaction. You can't ever make me believe that song is better than 90% of Floyd's music.