It's more elected and accountable than the Westminster Government. With Westminster 51% of the party with 51% of the seats (and 37% of the votes) agrees who will be the PM. The president of the commission is nominated by the heads of government of the member states (who are elected as above), then 51% of the parliament must approve it. This means that neither the heads of government or the democratically elected parliament can dictate who they want, they have to agree. The rest of the commissioners are chosen from a pool of nominations from the heads of government, just like the Westminster system. Again in this case the president doesn't have the power, the heads of government do, the president just chooses where to put the commissioners. Compare with the Westminster system, where the PM can appoint anyone they want to any ministerial job they want. The commission has far less power to destroy our lives than Theresa May (who wasn't even elected by her own party!), so the role is less important.