All the reviews and analysis by those in the display industry would disagree with you; you realize this right? The S5 is now considered the new standard for displays in terms of colour reproduction, brightness, clarity, white point, deep blacks, and gamut... S-AMOLED was an issues even is recently as 1.5 to 2 years ago however it has finally matured as a technology and is poised to overtake IPS based displays in quality within the next 1 to 1.5 years all the while keeping the advantages chiefly of which is battery life. If you're going to make statements like yours at least base it on actual current data and analysis and not arguments that held weight 2+ years ago all the while technology is changing rapidly.
An excerpt from the recent shootout done by display mate:
"The first notable OLED Smartphone, the Google Nexus One, came in decidedly last place in our 2010 Smartphone Display Shoot-Out. In a span of just four years OLED display technology is now challenging and even exceeding the performance of the best LCDs across the board in brightness, contrast, color accuracy, color management, picture quality, performance in high ambient light, screen uniformity, and viewing angles."
Full article and shootout can be found at:
http://www.displaymate.com/Galaxy_S5_ShootOut_1.htm