There was no case to argue for fatigue only sleepiness - if your unsure call your BALPA rep to discuss the difference
Rubbish. ICAO and all respectable regulators have moved away from " you're not fatigued, you're just tired".
The ICAO definition of fatigue recognises this through definition."Fatigue is defined as a physiological state of reduced mental or physical performance capability resulting from sleep loss or extended wakefulness, circadian phase, or workload (mental and/or physical activity) that can impair a crew member's alertness and ability to safely operate an aircraft or perform safety-related ..."
Ie, if your performance is reduced through lack of sleep, or hours of wakefulness ( being tired) , then you're within the definition of fatigue.