The bowing, the prostration the sitting in between the two prostrations and the standing after the bowing of the Prophet ﷺ but not qiyam (standing in the prayer) and quʿud (sitting in the prayer) used to be approximately equal (in duration).  

كَانَ رُكُوعُ النَّبِيِّ ﷺ وَسُجُودُهُ وَبَيْنَ السَّجْدَتَيْنِ وَإِذَا رَفَعَ مِنَ الرُّكُوعِ مَا خَلاَ الْقِيَامَ وَالْقُعُودَ قَرِيبًا مِنَ السَّوَاءِ