Leo Beenhakker admitted Trinidad and Tobago have 'still got a lot of work to do' before they are up to facing England in the World Cup finals.
The Dutchman, in charge of the smallest nation ever to qualify for the finals, saw his team embarrassed by a very young Wales team, who won a friendly here 2-1 thanks to a Robert Earnshaw double.
Stern John had put the Caribbean islanders ahead, but Wales battled hard to produce a victory that will have ensured England do not have any sleepless nights ahead of their match with Trinidad and Tobago in Nuremberg on June 15.
Coach Beenhakker said: 'Obviously we hate losing, but I have great respect for Wales and John Toshack and they played well. But I do not think the result was a fair reflection on the game.
'We had most of the possession and chances. But there is a big difference between preparation games and competitive ones. We are at a certain stage of our planning and are two weeks away from our objective.
'That has to be playing Sweden in our first match, I cannot think of England now although it is all I hear about. England, England, all the time.'
He added: 'We must stay focused on Sweden, but we realise that we have a lot of work to do. But at the moment I can live with a defeat by Wales.
'England comes later, and I know we will be better by then. Whether we will be good enough to beat Sweden, I do not know, but we will do a much better job than we did tonight.
'There were periods of the game in which we were very good, but we can manage better.
'We are a small nation and we are about to be facing big players, but we do not think of going to Germany and losing, we have got ambition and courage and we do not want to be coming home and watching the rest of the tournament on TV, just like my old friend John Toshack and Wales will be doing.'
Toshack witnessed a battling display by a team that used half a dozen under-20s, including 16-year-old Gareth Bale, who became Wales' youngest ever full international.
Toshack said: 'He can be very pleased with his performance, and his part in the winning goal.
'We have been very impressed with him while he has been with us, there is a lot more to come from him but that was certainly a great start.
'We have now drawn with Paraguay, beaten Trinidad and Tobago and only lost 1-0 to England in recent results.
'So I suppose I can say we have qualified from the group for the next stage of the World Cup finals. We can certainly dream.'
As for Wales' young players, Toshack said: 'We had Bale who is 16, Joe Ledley 19 and Lewin Nyatanga 17 playing down the left.
'And they did not look out of place, those three have been a real bonus for us.'