Confusing

I will try not to let this turn into a super long post/rant. But here it goes. I changed my MFP screen name a little while back so my current profile says Ive lost 21 pounds but I have actually lost 48 pounds in about 8 months or so. You would think that someone that has lost almost 50 pounds would have a pretty good understanding of these things but I guess not, at least with me. But here is my post/rant/questions. I wish MFP would tell you what number they came up with for your BMR and your TDEE. You put your info in and they tell you how many calories to consume for your desired weight loss but they dont give you your BMR and TDEE that was used. So basically, Im male, 5'11, 240 pounds, 36 years old. I work out 5 days a week. 4 days I do a combo of body building and cardio and on the 5th day I do straight cardio. When I put all my info into MFP, it tells me that to lose 2 pounds a week I need to consume 1750 net calories. Now when i use another calculator, such as scoobysworkshop, I put in the same info and it tells me that my BMR is 2192 and my TDEE is 3398 and if I consume 2548 its a projected weight loss of 1.7 pounds a week. So how can they be that far off? How can MFP say that 1750 is 2 pounds a week but the other says that 2548 is 1.7 pounds a week. Thats 700 more calories a day for basically the same weight loss. I went to fitnessfrog and it says my TDEE is 3437. So if I use their numbers thats 2437 calories a day for 2 pound a week loss. So Sccobysworkshop and fitness frog are about the same while MFP is way lower. Now I say all this because I had my calories set at 2350 for the last two weeks and I only lost 1 pound. I hear people say all the time to up your calories a little in some cases to lose weight so I thought well scooby says I need 2500 so maybe Im eating a little light for the amount of exercise I do. But then MFP says Im eating way too much. I dont know whether to drop my cals or raise them. My gut says to drop them down. Im just not sure that with the heavy weight lifting that is a good idea. Any thoughts?

I should note a couple things. First, MFP is telling me to eat less than what the others say my BMR is. If my BMR is really 2192 then eating 1750 while doing the weight lifting and cardio cant be good. I understand these are all just estimates and no calculator is 100% but these differences arent little. Second, I do a 4 day split with my lifting and I lift heavy. So its quite possible that I lost a pound of fat while gaining some muscle. I just feel like sometimes people use that as a cop out when they dont lose weight. They figure, oh well, I must have gained muscle. I dont want to use that as a cop out. I dont have a skin fold caliper so I have no way of testing to see if body fat went down and LBM went up. Third, my diet is not the greatest. Im working on it, But I do stay within my calories and hit pretty close to my macro goals. Im still working on getting a healthier diet but as far as calories and macros, Im pretty close.

Anyway, thanks for taking the time to read all this if anyone actually did. Whats your thoughts? Drop cals? Raise cals? Keep them the same see what happens in another two weeks?