Yeah they are better openers than some who have been tried, but they have technical issues definitely. I wouldn't overly criticise them though. If you put the ball in the right areas on that wicket then batsmen should struggle.
I just think England bowled far too short. They got Pakistan 50-3 in the morning session then started banging it in with a new ball. They need to start making hard decisions to leave out one of the bowlers and pick a balanced side. I'm not a huge fan of leaving out the spinner but Bess is not bowling that well. The other option is to leave out a seamer, and on current form for me it has to be Anderson. He carried virtually no threat on a wicket which should have suited him down to the ground. The team have fared far better recently when he hasn't played. I know it sounds harsh, but I don't think he's in the best 11.