DislikedKeeping in mind Steve system is based on simplicity and a fixed trading time.
In Steve case would you also imply that one currency has greater probability than another?Ignored
To answer your question, no I wouldn't differentiate between pairs. I would only focus on my setups and distribute my risk according to the probability of success for each setup within a certain context.
Basically, the setup alone is not enough. The setup and the context together give you the right probability of success.
The tough task is to get an objective % for each your setups within each possible context.
Let's keep in mind that position sizing is a crucial part of risk management. Why do you think big investment banks have plenty of risk managers on their payrolls? Simply because a good trader without the backup of a solid risk management may be an average trader at the end of the day, while an average trader may perform better with the help of a tailored-made risk management.
If you are a good trader and if you make money consistently in the markets using the same size everytime, you'd be surprised how much better you could be doing if you had the proper position size for each of your trades.
The way I look at flat-betting is the belief that the market will be the same every trading day, which is far from true. Every single moment is unique and it's our job to make the right estimate on our probabilities, risks and rewards.