This EA. or those versions here? You should ask the author of this EA, or (if author is not available here) - the coder (any coder) to check it for you (in may be in Freelance service for example).
But it also depends on how to backtest (which mod - on open bar, on every tick, and so on), and how this EA was coded (on open bar, on high/low of the bar, on close bar), and more and more. So, this is the author (coder) can tell you about it.
what i understand,it is always 3 to 5 pips with 4 digit broker are equal to 30 to 50 pips with 5 digit broker,you needs adjust your strategy/calculation (spread,profit,loss) according this.
You are mixing pips and points.
On the MT4 backtester the spread is in points. So if the broker spread is 3 pips, you need to set it to 30.
EDIT: just to be clear, my above remark is for 5 digits broker, on a 4 digits one 1 pip=1 point.