I can sympathize. I was in your shoes when I started lifting forever ago. The reason why everything seems to contradict itself is several fold:
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Each cardio and training type has its own advantages and disadvantages, and is useful in certain circumstances and less useful in others. It’s all a trade-off. This is the living embodiment of that most dreaded answer to any question: “It depends…” This means look at context, the big picture, to try to see where things fit and don’t fit and who they are likely to work best for. This takes time and practice and reading, and there’s no way around it. Sure you can hire a coach and a good coach can cut years off your time to progress but at the end of the day you still have to practice trial and error to find out for yourself, somehow.
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Science isn’t carved in stone–it is extraordinarily dirty, messy, contradictory, and gray area. I blame the media coverage for much of the confusion because they present eveything like it is the absolute end of the discussion…until 2 weeks or 1 month from now when they present some other study as the final word. Truth is there is context to each study and science doesn’t always–or even mostly–agree on everything.
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A lot of these kinds of articles are written with one specifc type of person in mind, or covering a specific scientific study. Refer back to 2)…science disagrees all the time, so some science does contradict itself. It’s a necessary evil while evolving.
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Each person is different. A big, obese dude with bad knees is not going to get advice from me to go jog. That will kill his knees. He’s also not going to get advice to run sprints–he is incapable of doing that and may injure himself. A small, tiny guy (or girl) with good knees who loves running may get advice from me to run sprints or run several miles because they enjoy it. A bodybuilder will not do the same kind of cardio that a track athlete or crossfit person will because his goals aren’t the same. You are not the same as some 225 lb bodybuilder. Again, this takes practice and TIME to learn where you fall. It’s like music–the rules to music are pretty clear but there are tons of different styles and they all appeal to different people.
In regards to your question on calories and such, it really depends on a) where you came from b) how long you’ve been doing this and c) what you do for training. Also d) how you feel.
The short answer is I would expect fat loss on your diet if you are new to it and training hard. If you have been at that level for months, then probably not: your body has adapted.
I would raise your fat no matter what. Typically the lowest I like to go with clients is about 35% of your bodyweight (~40 g for you). This is for sustained periods of time. For short periods it can be lower. Again that’s a ballpark and not a hard rule, but I think your fat is too low.