The MLB is not just a straight % like NBA, so it will be more difficult to figure out how to maximize returns.
Well, I suppose that purely depends on how you look at it. I suppose (looking at the free Accuscore Plus-preview Villanova - Pittsburgh game and supposing mlb will be similar) you basically will get the percentage of Team A winning against Team B. Aside of that you've got the odds you get from bookmakers (can either take the avg of them or always take 1 bookmaker and consistently stick with that one) and then it's just a matter of comparing.
Example:
Question:
Suppose Team A has (according to Accuscore) a chance of 63.0% to win
The odds you can get from bookies is -145.
Should you bet Team A?
Answer: For 64% the most accurate line would be -170 (63/0.37 = 170.27 = 170.3 = 170), the line we get it -145. Comparing the lines gets a difference of 1.1724. This number can be used to compare what the strongest plays are as it is the expected advantage over the given lines. Put into other words, if we played endless games with exactly that strength (1.1724) we would win 1.1724 for every 1 that we lose -- this would come down on about 54%*.
*
Important Note: While this percentage seems low comparable to the 60% that is sometimes gotten by NBA one has to realize it's not as bad as it looks. That 60% percentage was purely the percentage that the spread would make it and thus you would make a loss if you'd bet the 50-52% as well due to the avg -110 cut (which implies 52.38%) and then 54% would be low.
Here however is the juice that the bookmaker takes already taken into account for it deals with the advantage over the
given line and thus on the long run (supposing accuscores percentages are correct) you'd even make a slim profit if you'd bet the lines that differ only slightly [for instance, you get -145 while accuscore says the correct line would be -150].
Now, if we suppose accuscore is more right than the lines and thus weilds a profit on the long run, this method will work. It should be made sure though what the cut-off line should be -- as written just before, even very small advantages should pay off but that would simply give too many bets. The correct cut-off should be based on the desired expected amount of picks (per day, per week, per month, whatever); the more amount of desired picks from the system, the lower the cut and thus the weaker the average pick. I suppose realistically the best cut-off should be around 1.2222 aka 55% [again, this is lower than nba for the juice is already taken into the calculation]
The major problem with this whole system of calculating what the best lines are is that it is time-intensive;
1) Get the Accuscore-percentage
2) Get the line
3) Devide by %/Line in case of fav or Line / % in case of dog so to calc the strength of the play.
4) Make it a play if strength > cut-off
When done it's really not that time-intensive per game, but with more than a dozen games on a day and changing lines and percentages I suppose it would be best to make some kind of program to do it automatically... then again, I've never done something like programming of any kind so I can only suppose it could be done by a program.
So yeah, there you are for how to calculate what the best bets are according to the percentages etc.