The world No 1 one-day global side were embarrassed in Edinburgh but, ahead of a series against Australia which starts on Wednesday, Morgan chose to view it as valuable preparation.
Safyaan Sharif was the man to clinch the victory, trapping Mark Wood leg before wicket in the penultimate over to spark wild celebrations and a pitch invasion from a tense crowd in Edinburgh.
"I hit it nicely", MacLeod said.
The Tasmanian was pondering retirement less than three years ago and now finds himself at the helm for a five-match series in England.
Calum MacLeod's sublime, unbeaten 140 - together with strong contributions from Matthew Cross (48), skipper Kyle Coetzer (58) and George Munsey (55) - propelled Scotland to a mammoth total of 371-5, comfortably their best in ODIs.
The loss to Scotland was England's first outing since rising to top of the ODI rankings, but Bairstow does not think that tag will affect the team or their opponents going forward.
"A one-off game like this, to bring your best game is very hard to do, they played well and deserved the result", said Morgan.
"We're always trying to get someone to stick their hand up and we always celebrate each other's success", MacLeod told Sky Sports during the break between innings.
The International Cricket Council's decision to shrink the World Cup from 14 teams to 10 had already been heavily criticised long before Scotland and their fellow associate or non-Test nations impressed with the quality of their play in Zimbabwe.
"We set our stall out to be number one in the world and that's where we are, whether we were number one in this game or not, Scotland would still be delighted to win, it's not just because we are number one".
"Cricket has all the ingredients to become a global game", Tendulkar said on Twitter Sunday after Scotland's shock win over the top-ranked England.
"We didn't do enough to win, if we had won it would have been a bonus given the position we got ourselves in".