The Uruguyan manager saw his players score three own goals in a dismal 6-1 defeat at Anfield, which sees the Reds progress to the quater-finals and a date with Stoke City
Three own goals helped the hosts on the way to a rout, with Lewis Dunk and two Liam Bridcutt errors costing the Seagulls heavily, while Martin Skrtel, Andy Carroll and Luis Suarez all netted for Kenny Dalglish's side.
Brighton’s Kazenga LuaLua pulled one back after Skrtel’s opener with a fantastically struck free kick, but the visitors failed to mount any further solid attacks and ran out as soundly beaten losers.
Poyet, whose side are chasing a play-off place in the Championship, believes the display from his players has showed him that his outfit are not ready for top fight football.
Poyet told reporters: “I’ve been very honest with the press, especially from Brighton, for the last two or three months when they are talking about promotion and I said ‘I want to be ready’.
"I don’t want to [go to] Anfield and lose 6-1 or 7-1. Some people think I’m being negative, [but] the best way to get to the Premier League is to be ready, when you have strength, power, technical ability, [and] understanding, then you can play in the Premier League.
“If not, then you can forget about being in the top six because you’re going to suffer, no matter if you put players behind the ball, it’s not going to matter if you play long or short. You need quality and you need to defend.”
Asked what would be required for promotion, Poyet added: “It would be a massive chance if we achieve it [promotion], it would be fantastic for me as a manager, but we need to change completely and I mean big because I don’t want to lose in the Premier League 6-1, I don’t enjoy that.”
The former Chelsea and Tottenham ace couldn’t describe his emotions following the final whistle, but believed his side had started positively before conceding a second just before the break.
He said: “It’s difficult to say [how I feel], because I was quite pleased up until the second goal and maybe we didn’t understand what we needed to do in the second half, from our point of view we were very simple. While I was waiting for you [the press] I watched the goals on the computer and there are some funny ones on there.”
With so many errors made by the visiting side, Poyet insisted it would be a hard task to talk to his players one by one, but hopes his players have learned from the experience.
He said: “I didn’t talk individually [to the players] because there were so many different individual things, it would take me all day to talk to them. I learned a lot, I hope they did the same because if they want to achieve as a team or individuals to play in the Premier League, now they know.”
The Uruguayan has been outspoken about the recent trials and tribulations of fellow countryman Luis Suarez after his racism charge and has backed his compatriot all the way.
The striker’s goal, Poyet admits, was one that he is glad to have seen.
Poyet admitted: “Yes [I am happy he scored], especially after the [missed] penalty, I have to be honest. It was a matter of conceding another one or not, but he needed the goal, I think it was important for him.”