Is the velocity spectrum of elastic turbulence universal?

In elastic turbulence at $\mathrm{Re} \to 0$ the velocity spectrum is $E(k) \sim k^{-\alpha}$; theory requires $\alpha > 3$ for a smooth velocity field (Fouxon and Lebedev 2003), experiments in curvilinear flows report $\alpha$ of about 3.3 to 3.6 (approximately), and channel DNS give $\alpha \sim 4$. Determine whether $\alpha$ has a universal value as $\mathrm{Wi} \to \infty$ and, if so, compute it.

A theory predicting $\alpha$, confirmed by spectra over at least a decade in $k$ in two different geometries at matched Wi.