If an easy win is one that doesn't involve going to any of the top relievers to finish out the game to earn a save, or to preserve ties, those are very rare for the Brewers.
I made the point in a game thread last week that the Brewers have fewer wins (by a significant amount) that didn't require a save than any of the other NL playoff contenders. The main reason for this is that the Brewers offense doesn't produce enough runs often enough to allow games to be finished out without a save.
The Brewers model of hoping to squeeze out enough runs in the first 6 innings to create a small lead and then counting on the bullpen to hold that lead cannot be sustained for a whole season. To win 90-95 games a team has to win some games by building up a 4 or 5 run lead (or larger) and taking that lead to the end of the game without going to the back end of the bullpen. The Brewers have not been able to do that often enough.
Just look at the scores after 6 innings in the 15 games the Brewers have played since the 19 run outburst in Pittsburgh (their most recent easy win):
2-7, 2-0, 0-1, 2-8, 1-0, 3-2, 3-0, 4-5, 6-2, 1-1, 2-2, 5-2, 0-1, 1-9, 3-3
In those 15 games, the Brewers have scored just 55 runs (3.67 per game) while going 6-9 against teams and pitchers that generally aren't the best in the league. But only 35 of those runs have come in the first 6 innings of games, and only once have they had a lead of over 3 runs going into the final innings. A lot of the runs coming after the 6th inning have come in extra innings (with the aid of a free runner) or as consolation runs in the games in which they were way behind.
That kind of offense forces the starters to be near perfect to keep the team in the game and a near perfect effort from the bullpen to pull out wins.